D. 1 pt - Combine the data and the tree using comparative.data() to ready the tree for pgls. Note: if you used dplyr in the steps above, you need to change the class of the resulting dataframe, because there is a bug in caper and it won’t deal with a dplyrtbl_df object. You can use this line of code to fix it class(dataframeFromDplyr) <- "data.frame"